Radio frequency waveguide communication in high temperature environments
A system of a machine includes a network of a plurality of nodes distributed throughout the machine. Each of the nodes is operable to communicate through a plurality of electromagnetic signals. A controller is operable to communicate with the network of nodes through the electromagnetic signals. A plurality of waveguides is configured to confine transmission of the electromagnetic signals between the controller and one or more of the nodes. A radio frequency antenna is coupled to a first end of a first waveguide of the plurality of waveguides. A radio frequency transceiver is coupled between the controller and the radio frequency antenna. A capacitively coupled membrane at a second end of the first waveguide is configured to establish communication between the first waveguide and at least one node of the plurality of nodes.
1. A system of a machine, the system comprising:
a network of a plurality of nodes distributed throughout the machine, each of the nodes operable to communicate through a plurality of electromagnetic signals;
a controller operable to communicate with the network of nodes through the electromagnetic signals;
a plurality of waveguides configured to confine transmission of the electromagnetic signals between the controller and one or more of the nodes;
a radio frequency antenna coupled to a first end of a first waveguide of the plurality of waveguides;
a radio frequency transceiver coupled between the controller and the radio frequency antenna; and
a capacitively coupled membrane at a second end of the first waveguide configured to establish communication between the first waveguide and at least one node of the plurality of nodes.
2. The system of claim 1 , wherein the first waveguide comprises a hollow metallic waveguide.
3. The system of claim 1 , wherein the radio frequency transceiver is configured to output a pulse train to the radio frequency antenna to broadcast within the first waveguide responsive to the controller.
4. The system of claim 3 , further comprising a dielectric disk in the first waveguide proximate to the capacitively coupled membrane, wherein the dielectric disk is configured to generate a plurality of acoustic pressure waves to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide, and the at least one node comprises an effector node.
5. The system of claim 1 , wherein the at least one node comprises an oscillator and a modulator configured to vibrate the capacitively coupled membrane based on a sensor response, and the radio frequency transceiver is configured to detect vibration of the capacitively coupled membrane.
6. The system of claim 5 , wherein the radio frequency transceiver is configured to output a pulse train to the radio frequency antenna to broadcast within the first waveguide responsive to the controller.
7. The system of claim 6 , further comprising a dielectric ring in the first waveguide proximate to the capacitively coupled membrane, wherein the dielectric ring is configured to generate a plurality of acoustic pressure waves to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide, and the at least one node comprises an effector and sensor node.
8. A system for a gas turbine engine, the system comprising:
a network of a plurality of nodes distributed throughout the gas turbine engine, each of the nodes associated with at least one sensor and/or effector of the gas turbine engine and operable to communicate through a plurality of electromagnetic signals;
a controller of the gas turbine engine operable to communicate with the network of nodes through the electromagnetic signals;
a plurality of waveguides configured to confine transmission of the electromagnetic signals between the controller and one or more of the nodes;
a radio frequency antenna coupled to a first end of a first waveguide of the plurality of waveguides;
a radio frequency transceiver coupled between the controller and the radio frequency antenna; and
a capacitively coupled membrane at a second end of the first waveguide configured to establish communication between the first waveguide and at least one node of the plurality of nodes.
9. The system of claim 8 , wherein one or more of the nodes are located at least one of a fan section, a compressor section, a combustor section and a turbine section of the gas turbine engine, and the first waveguide comprises a hollow metallic waveguide.
10. The system of claim 8 , wherein the radio frequency transceiver is configured to output a pulse train to the radio frequency antenna to broadcast within the first waveguide responsive to the controller.
11. The system of claim 10 , further comprising a dielectric disk in the first waveguide proximate to the capacitively coupled membrane, wherein the dielectric disk is configured to generate a plurality of acoustic pressure waves to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide, and the at least one node comprises an effector node.
12. The system of claim 8 , wherein the at least one node comprises an oscillator and a modulator configured to vibrate the capacitively coupled membrane based on a sensor response, and the radio frequency transceiver is configured to detect vibration of the capacitively coupled membrane.
13. The system of claim 12 , wherein the radio frequency transceiver is configured to output a pulse train to the radio frequency antenna to broadcast within the first waveguide responsive to the controller, and further comprising a dielectric ring in the first waveguide proximate to the capacitively coupled membrane, wherein the dielectric ring is configured to generate a plurality of acoustic pressure waves to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide, and the at least one node comprises an effector and sensor node.
14. A method of establishing electromagnetic communication through a machine, the method comprising:
configuring a network of a plurality of nodes to communicate through a plurality of electromagnetic signals, wherein the nodes are distributed throughout the machine;
initiating communication between a controller and the network of nodes through the electromagnetic signals;
confining transmission of the electromagnetic signals in a plurality of waveguides between the controller and one or more of the nodes;
propagating a portion of the electromagnetic signals through a radio frequency antenna coupled to a first end of a first waveguide of the plurality of waveguides, a radio frequency transceiver coupled between the controller and the radio frequency antenna, and a capacitively coupled membrane at a second end of the first waveguide configured to establish communication between the first waveguide and at least one node of the plurality of nodes.
15. The method of claim 14 , wherein the first waveguide comprises a hollow metallic waveguide.
16. The method of claim 14 , further comprising outputting a pulse train from the radio frequency transceiver to the radio frequency antenna to broadcast within the first waveguide responsive to the controller.
17. The method of claim 16 , wherein a dielectric disk in the first waveguide is proximate to the capacitively coupled membrane, and further comprising generating a plurality of acoustic pressure waves to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide and the dielectric disk, and the at least one node comprises an effector node.
18. The method of claim 14 , wherein the at least one node comprises an oscillator and a modulator, and further comprising:
vibrating the capacitively coupled membrane based on a sensor response modulated with a carrier frequency of the oscillator by the modulator; and
detecting vibration of the capacitively coupled membrane by the radio frequency transceiver.
19. The method of claim 18 , further comprising outputting a pulse train by the radio frequency transceiver to the radio frequency antenna to broadcast within the first waveguide responsive to the controller.
20. The method of claim 19 , wherein a dielectric ring in the first waveguide is proximate to the capacitively coupled membrane, and further comprising generating a plurality of acoustic pressure waves by the dielectric ring to mechanically vibrate the capacitively coupled membrane responsive to the pulse train broadcast through the first waveguide, and the at least one node comprises an effector and sensor node.